CVE-2025-43461
📋 TL;DR
This CVE describes a macOS vulnerability where improper symlink validation could allow an application to bypass file system protections and access sensitive user data. It affects macOS systems before version 26.1 (Tahoe). The vulnerability requires a malicious app to be installed on the target system.
💻 Affected Systems
- macOS
📦 What is this software?
Macos by Apple
macOS is Apple's desktop and laptop operating system powering Mac computers used by millions of professionals, developers, creative professionals, and enterprise users worldwide. Built on a Unix foundation with the Darwin kernel and modern Cocoa frameworks, macOS delivers a seamless ecosystem integr...
Learn more about Macos →⚠️ Risk & Real-World Impact
Worst Case
A malicious application could access protected user data including documents, credentials, or other sensitive files that should be restricted by macOS sandboxing and permissions.
Likely Case
Malicious apps distributed through unofficial channels could access user data they shouldn't have permission to read, potentially leading to data theft.
If Mitigated
With proper app vetting and security controls, the risk is limited to apps that bypass Apple's review process or are installed from untrusted sources.
🎯 Exploit Status
Exploitation requires a malicious app to be installed and executed on the target system. The app must be able to create symlinks and access file system operations.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Tahoe 26.1
Vendor Advisory: https://support.apple.com/en-us/125634
Restart Required: Yes
Instructions:
1. Open System Settings 2. Click General 3. Click Software Update 4. Install macOS Tahoe 26.1 update 5. Restart when prompted
🔧 Temporary Workarounds
Restrict App Installation Sources
macosConfigure macOS to only allow app installations from the App Store and identified developers
sudo spctl --master-enable
sudo spctl --enable --label "Mac App Store"
sudo spctl --enable --label "Developer ID"
Enable Gatekeeper
macosEnsure Gatekeeper is enabled to verify app signatures before execution
sudo spctl --status
🧯 If You Can't Patch
- Implement strict application allowlisting policies to prevent unauthorized app execution
- Educate users about the risks of installing apps from untrusted sources and implement security awareness training
🔍 How to Verify
Check if Vulnerable:
Check macOS version: if version is earlier than 26.1, the system is vulnerableCheck Version:
sw_versVerify Fix Applied:
Verify macOS version is 26.1 or later after applying the update📡 Detection & Monitoring
Log Indicators:
- Unusual symlink creation events in system logs
- Apps accessing files outside their expected sandbox boundaries
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
source="macos_system_logs" AND (event="symlink" OR event="sandbox_violation") AND severity=high